Yuan Bo, Wang Zhiwei, Zhao Yin, Xu Guofeng, Zhou Shengyuan, Chen Xiongsheng, Jia Lianshun
Spine Center, Department of Orthopedics, Changzheng Hospital, Second Military Medical University, Shanghai, People's Republic of China.
Spine Center, Department of Orthopedics, Changzheng Hospital, Second Military Medical University, Shanghai, People's Republic of China.
World Neurosurg. 2018 Aug;116:e929-e933. doi: 10.1016/j.wneu.2018.05.130. Epub 2018 May 28.
To investigate the incidence, distribution characteristics, and radiographic features of the ossification of the posterior longitudinal ligament (OPLL) combined with ossification of the nuchal ligament (ONL) and to analyze the correlation between the location of ONL and degree of ossification in patients with cervical OPLL.
From January 2010 to December 2016, the clinical data of 217 patients with cervical OPLL were reviewed retrospectively. Type and location of OPLL and ONL were determined on computed tomography images and lateral radiograph films. For patients with the local type of ONL, the segment with the largest spinal canal occupation ratio (COR) of OPLL was determined on cross-sectional computed tomography slices. The correlation between the location of ONL and segment with the largest COR of OPLL was evaluated.
Of the 217 patients with cervical OPLL, 118 patients (54.4%) had OPLL combined with ONL (92 male and 26 female patients). The incidence of ONL was almost 1.4 times greater in males than in female patients (P = 0.03). C5-C6 (49.5%) was the segment at which ONL occurred most. Of 60 patients with the local type of ONL, 34 patients' ONL was located at the segment with largest COR of OPLL. The matching ratio was the largest (77.8%) when the type of OPLL was locally circumscribed (P = 0.003).
The incidence of ONL was 54.4% in patients with cervical OPLL, and male patients were affected more than female patients. ONL occurred most in segment C5-C6. The location of local-type ONL commonly corresponded to the segment with the largest COR of OPLL when type of OPLL was circumscribed.
探讨后纵韧带骨化（OPLL）合并项韧带骨化（ONL）的发生率、分布特征及影像学特点，并分析颈椎OPLL患者ONL的位置与骨化程度之间的相关性。
回顾性分析2010年1月至2016年12月期间217例颈椎OPLL患者的临床资料。通过计算机断层扫描图像和侧位X线片确定OPLL和ONL的类型及位置。对于局部型ONL患者，在横断面计算机断层扫描切片上确定OPLL椎管占位率（COR）最大的节段。评估ONL位置与OPLL COR最大节段之间的相关性。
217例颈椎OPLL患者中，118例（54.4%）合并ONL（男性92例，女性26例）。男性ONL的发生率几乎是女性患者的1.4倍（P = 0.03）。C5-C6节段（49.5%）是ONL最常发生的节段。在60例局部型ONL患者中，34例患者的ONL位于OPLL COR最大的节段。当OPLL类型为局限性时，匹配率最高（77.8%）（P = 0.003）。
颈椎OPLL患者ONL的发生率为54.4%，男性患者受累多于女性患者。ONL最常发生于C5-C6节段。当OPLL类型为局限性时，局部型ONL的位置通常与OPLL COR最大的节段相对应。
